JSFiddle - React, Tailwind, and code Playground
by 규연 황
HTML
<div class="demo"></div>
CSS
.demo {
width: 300px;
height: 100px;
background: #000000;
background: -moz-linear-gradient(45deg, #000000 1%, #000000 50%, #207cca 50%, #207cca 100%);
background: -webkit-linear-gradient(45deg, #000000 1%,#000000 50%,#207cca 50%,#207cca 100%);
background: linear-gradient(45deg, #000000 1%,#000000 50%,#207cca 50%,#207cca 100%);
}